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neonofarm [45]
3 years ago
6

What is the value of z in the equation 2z + 8 = −6? −1 −7 1 7

Mathematics
1 answer:
vitfil [10]3 years ago
4 0

Answer:

So the answer is -7

Step-by-step explanation:

2z + 8 = −6

2z + 8 -8 = -6 -8 ( add  - 8 for both sides)

2z = -14

2z/2 = -14/2 (divide both sides by 2)

z = - 7

So the answer is -7

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Suppose 2' is a normally distributed random variable with ft = 10.3 and 0 = 3.8. For the following probability,draw an appropria
TiliK225 [7]

GIVEN

The following values are given:

\begin{gathered} \mu=10.3 \\ \sigma=3.8 \end{gathered}

SOLUTION

The z-score for the x values 9 and 14 can be calculated using the formula:

z=\frac{x-\mu}{\sigma}

For x = 9:

\begin{gathered} z=\frac{9-10.3}{3.8} \\ z=-0.34 \end{gathered}

For x = 14:

\begin{gathered} z=\frac{14-10.3}{3.8} \\ z=0.97 \end{gathered}

The probability can be calculated as follows:

P(9\le x\le14)=Pr(-0.34The region that represents the solution is shown below:Therefore, the probability is given to be:[tex]P(9\le x\le14)=0.4671

The probability is 0.4671.

8 0
1 year ago
What number is 62% of 50
goldfiish [28.3K]
62\% \ of \ 50= 62\% \times 50=\frac{62}{100} \times 50= \frac{62}{2} \times 1=31

31 is 62% of 50.
8 0
3 years ago
Find the gradient (m) and y-intercept (c) of the equation y =-2/3x+1/3
zepelin [54]

he equation of a line is written as y=mx+b where m is the slope and b is the

y -intercept, Thus,m=23 And the y -intercept,b=1

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3 years ago
14 in. = _____ ft<br> Plzzzzzzzz help
Dafna1 [17]

Answer:

1.2

Step-by-step explanation:

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3 0
3 years ago
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Find the product and show your work. <br><br> (7r^2-6r-6)(2r-4)
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Answer:

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